Job Description:

• 1) Installs and regulates gas-burner units in building-heating furnaces to convert furnaces from wood, coal, or oil to gas: Directs helper to prepare furnace for installation of gas burner unit.

• 2) Lays brick foundation.

• 3) Ignites gas burner and adjusts gas-flow and air-supply control valves until observation of gas flame indicates correct combustion.